【Daily Question】Chemical Analysis Edition, 10.27.2019

2019-10-27View Original

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This post was last edited by zjp on 2019-10-27 07:42. Those who are willing to take on responsibilities in managing industry regions are invited to reply at https://bbs.hcbbs.com/thread-2776127-1-1.html; there are generous monthly salary rewards available! Multiple-choice question: The label concentration of the NaOH solution is 0.300 mol/L. This solution has absorbed a small amount of CO2 from the air. Now, using phenolphthalein as an indicator, it is standardized with standard HCl solution; the result of this standardization is () compared to the label concentration. A. High; B. Low; C. Unchanged; D. Cannot be determined B

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【Daily Question】Chemical Analysis Edition, 10.27.2019

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